Relays are applied to operated inclusion and switching-off of the consumer under the influence of an electric signal. If the relay is faulty, the given consumer will work unstably. Relays are mounted in the uniform block located under a forward partition of salon or in a motor compartment. The faulty relay can be taken, having got from a socket. The relay is not subject to dismantling and is replaced entirely. The new relay should correspond in accuracy to the replaced.